Reverse a SnapMirror relationship between FlexGroup volumes during disaster recovery
When a disaster disables the source FlexGroup volume of a SnapMirror relationship, you can use the destination FlexGroup volume to serve data while you repair or replace the source FlexGroup volume. After the source FlexGroup volume is online, you can make the original source FlexGroup volume a read-only destination and reverse the SnapMirror relationship.
Any active quota rules on the destination volume are deactivated and the quota rules are deleted before resynchronization is performed.
You can use the
volume quota policy rule create and
volume quota modify commands to create and reactivate quota rules after the resynchronization operation is complete.
On the original destination FlexGroup volume, remove the data protection mirror relationship between the source FlexGroup volume and the destination FlexGroup volume:
snapmirror delete -destination-path svm_name:volume_name
cluster2::> snapmirror delete -destination-path vsd:dst
On the original source FlexGroup volume, remove the relationship information from the source FlexGroup volume:
snapmirror release -destination-path svm_name:volume_name -relationship-info-only
After deleting a SnapMirror relationship, you must remove the relationship information from the source FlexGroup volume before attempting a resynchronization operation.
cluster1::> snapmirror release -destination-path vsd:dst -relationship-info-only true
On the new destination FlexGroup volume, create the mirror relationship:
snapmirror create -source-path src_svm_name:volume_name -destination-path dst_svm_name:volume_name -type XDP -policy MirrorAllSnapshots
cluster1::> snapmirror create -source-path vsd:dst -destination-path vss:src -type XDP -policy MirrorAllSnapshots
On the new destination FlexGroup volume, resynchronize the source FlexGroup:
snapmirror resync -source-path svm_name:volume_name
cluster1::> snapmirror resync -source-path vsd:dst
Monitor the SnapMirror transfers:
snapmirror show -expand
cluster2::> snapmirror show -expand Progress Source Destination Mirror Relationship Total Last Path Type Path State Status Progress Healthy Updated ----------- ---- ------------ ------- -------------- --------- ------- -------- vsd:dst XDP vss:src Snapmirrored Idle - true - vss:dst__0001 XDP vss:src__0001 Snapmirrored Idle - true - vsd:dst__0002 XDP vss:src__0002 Snapmirrored Idle - true - vsd:dst__0003 XDP vss:src__0003 Snapmirrored Idle - true - vsd:dst__0004 XDP vss:src__0004 Snapmirrored Idle - true - vsd:dst__0005 XDP vss:src__0005 Snapmirrored Idle - true - vsd:dst__0006 XDP vss:src__0006 Snapmirrored Idle - true - vsd:dst__0007 XDP vss:src__0007 Snapmirrored Idle - true - vsd:dst__0008 XDP vss:src__0008 Snapmirrored Idle - true - ...
The SnapMirror relationship status of each constituent shows as
Snapmirroredthat indicates that the resynchronization was successful.